How To Make A HDTV Antenna: 8 Steps (with Pictures) - WikiHow

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Terms of Use wikiHow is where trusted research and expert knowledge come together. Learn why people trust wikiHow How to Make a HDTV Antenna PDF download Download Article Explore this Article Steps Steps Other Sections Questions & Answers Tips and Warnings Things You'll Need Related Articles References Author Info

Last Updated: December 22, 2023 Approved

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wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. To create this article, 9 people, some anonymous, worked to edit and improve it over time. wikiHow marks an article as reader-approved once it receives enough positive feedback. In this case, 99% of readers who voted found the article helpful, earning it our reader-approved status. This article has been viewed 345,387 times. Learn more...

Using a HDTV (High-Definition Television) antenna, based on the DB4 design, is 1 of the most effective ways to retrieve HDTV signals. Purchasing this type of antenna at a store will cost you at least $40. However, you can build such an antenna yourself at a much lower cost. The following is a guide on how to make a HDTV antenna.

Things You Should Know

  • Get a wooden board that is 1x3x22 inches. Beginning at 2 inches in, draw lines that are 5.25 inches apart across the board with two evenly spaced dots on each line.
  • Cut 8 14 inch pieces of copper wire and fold them into "V"s. Use screws and washers to attach the creased side of the wire to each of the dots.
  • Connect a balun to the two center sections of wire and connect to an HDTV using a coax cable.

Steps

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  1. Step 1 Prepare a wooden board. 1 Prepare a wooden board.
    • It should be 1x3 inches (2.54x7.62 cm) or 2x3 inches (5.08x7.62 cm).
    • It should be 22 inches (55.88 cm) long.
    • Going from left to right with the board laying horizontally, mark lines at the 2 inch (5.08 cm) mark, the 7.25 inch (18.42 cm) mark, the 12.5 inch (31.75 cm) mark, and the 17.75 inch (45.09 cm) mark. Use a marker or a pencil.
    • Mark 2 dots on each line that are evenly spaced.
  2. Step 2 Cut 8 sections of copper wire. 2 Cut 8 sections of copper wire.
    • Each section should be 14 inches (35.56 cm) long.
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  3. Step 3 Bend each section of wire. 3 Bend each section of wire.
    • Each should be bent so that each side is 7 inches (17.78 cm) long.
    • The gap between each side should be 3 inches (7.62 cm) long.
    • Each wire should resemble a "V" when you are finished.
  4. Step 4 Attach the v-shaped wires to the board. 4 Attach the v-shaped wires to the board.
    • Attach the center (bent portion) of each wire to the dotted areas of the board using screws and washers.
    • When finished, each v-shaped wire should extend outward from the board.
  5. Step 5 Weave 2 wires on the board. 5 Weave 2 wires on the board.
    • Use the remaining portion of the wire for this.
    • The bent portion of the v-shaped wires should be intersected once each.
    • The wires should not touch each other.
    • Be sure that at least 1 of the wires that you weave is insulated. Vinyl insulation will work well.
    • When finished, the wires should resemble 2 "X" shapes that connect the first and second and the third and fourth sets of v-shaped wires, respectively. Two horizontal lines should connect the "X" designs between the second and third sets of v-shaped wires.
  6. Step 6 Attach reflectors (grill screens) to the board. 6 Attach reflectors (grill screens) to the board.
    • Two reflectors should be evenly spaced on the back of the board.
    • Each reflector should be 15x9 inches (38.1x22.86 cm).
    • Use screws to complete this task.
    • The reflectors should not touch the v-shaped wires.
  7. Step 7 Attach a balun to the 2 center sections of wire. 7 Attach a balun to the 2 center sections of wire.
    • This is a transformer that can be purchased on the Internet or at an electronics retailer.
    • Follow the instructions that come with the balun.
  8. Step 8 Attach the antenna to a HD television. 8 Attach the antenna to a HD television.
    • Use a coax cable, which can be purchased on the Internet or at an electronics retailer.
    • Follow the instructions that come with the coax cable.
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Community Q&A

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  • Question What are grill screens? Community Answer Community Answer Aluminum window screen material, hardware cloth, or any type of metal screening that is no more than 1/2" squares. Cut to the proper size, most metal will become a suitable reflector, as long as any holes are under that dimension. This is frequency related and will vary by the signal you're trying to capture. Thanks! We're glad this was helpful. Thank you for your feedback. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow Yes No Not Helpful 19 Helpful 46
  • Question Can copper insulated wire be used? Community Answer Community Answer Yes. The velocity factor may be different, but probably close enough to bare wire. Thanks! We're glad this was helpful. Thank you for your feedback. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow Yes No Not Helpful 9 Helpful 13
  • Question What gauge wire should be used? Distance from edge for holes? Also, the dimensions shown in the first step don't make any sense, they add up to 58.75 inches. At best, the drawing is poorly done. Robinson Valderrama Robinson Valderrama Community Answer The drawing and measurements are poorly made, the distance between each point is 5.25 inches, this gives a total of 15.75 inches. Thanks! We're glad this was helpful. Thank you for your feedback. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow Yes No Not Helpful 21 Helpful 45
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Tips

  • Wire coat hangers may be substituted for copper wires. Be sure to mimic the mentioned setup of the wiring and strip any paint or varnish off of the coat hangers where they touch the wire. Thanks Helpful 3 Not Helpful 1
Submit a Tip All tip submissions are carefully reviewed before being published Name Please provide your name and last initial Submit Thanks for submitting a tip for review! Advertisement

Things You'll Need

  • Wooden board that is 22 inches (55.88 cm) long with a specification of 1x3 inches (2.54x7.62 cm) or 2x3 inches (5.08x7.62 cm)
  • Marker or pencil
  • Screws
  • Washers
  • Fifteen feet (4.57 m) of copper wire or wire coat hangers
  • Two 15x9 inch (38.1x22.86 cm) grill screens
  • Balun
  • Coax cable
  • Wire cutter
  • Screwdriver

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References

  1. http://www.thermometricscorp.com/wircabmat1.html

About This Article

wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. To create this article, 9 people, some anonymous, worked to edit and improve it over time. This article has been viewed 345,387 times. How helpful is this? Co-authors: 9 Updated: December 22, 2023 Views: 345,387 Categories: Antennas In other languages Spanish Indonesian French Chinese Dutch Hindi German Japanese
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Thanks to all authors for creating a page that has been read 345,387 times.

Reader Success Stories

  • Nicole Taylor

    Nicole Taylor

    Sep 29, 2019

    "We needed a quick antenna in the office for football, and it works great." Rated this article:
More reader stories Hide reader stories Share your story

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About This Article

Click a star to vote Co-authors: 9 Updated: December 22, 2023 Views: 345,387 Nicole Taylor

Nicole Taylor

Sep 29, 2019

"We needed a quick antenna in the office for football, and it works great." Rated this article: Bear A.

Bear A.

Nov 3, 2024

"I made one it works great." Rated this article: Share yours! More success stories Hide success stories

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